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  <title>Adds an object in the storage</title>

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</div><hr /><div id="splobjectstorage.attach" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">SplObjectStorage::attach</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.1.0)</p><p class="refpurpose"><span class="refname">SplObjectStorage::attach</span> &mdash; <span class="dc-title">Adds an object in the storage</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-splobjectstorage.attach-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type"><span class="type void">void</span></span> <span class="methodname"><strong>SplObjectStorage::attach</strong></span>
    ( <span class="methodparam"><span class="type">object</span> <code class="parameter">$object</code></span>
   [, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$data</code><span class="initializer"> = <strong><code>NULL</code></strong></span></span>
  ] )</div>

  <p class="para rdfs-comment">
   Adds an <span class="type"><a href="language.types.object.html" class="type object">object</a></span> inside the storage, and optionally associate it to some data.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-splobjectstorage.attach-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">object</code></em></dt>

     <dd>

      <p class="para">
       The <span class="type"><a href="language.types.object.html" class="type object">object</a></span> to add.
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">data</code></em></dt>

     <dd>

      <p class="para">
       The data to associate with the <span class="type"><a href="language.types.object.html" class="type object">object</a></span>.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-splobjectstorage.attach-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   没有返回值。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-splobjectstorage.attach-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-3717">
    <p><strong>Example #1 <span class="function"><strong>SplObjectStorage::attach()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$o1&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">StdClass</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$o2&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">StdClass</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$s&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SplObjectStorage</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$s</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">attach</span><span style="color: #007700">(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">);&nbsp;</span><span style="color: #FF8000">//&nbsp;similar&nbsp;to&nbsp;$s[$o1]&nbsp;=&nbsp;NULL;<br /></span><span style="color: #0000BB">$s</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">attach</span><span style="color: #007700">(</span><span style="color: #0000BB">$o2</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"hello"</span><span style="color: #007700">);&nbsp;</span><span style="color: #FF8000">//&nbsp;similar&nbsp;to&nbsp;$s[$o2]&nbsp;=&nbsp;"hello";<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">[</span><span style="color: #0000BB">$o1</span><span style="color: #007700">]);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">[</span><span style="color: #0000BB">$o2</span><span style="color: #007700">]);<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
NULL
string(5) &quot;hello&quot;
</pre></div>
    </div>
   </div>
  </p>
 </div>


  <div class="refsect1 changelog" id="refsect1-splobjectstorage.attach-changelog">
   <h3 class="title">更新日志</h3>
   <p class="para">
    <table class="doctable informaltable">
     
      <thead>
       <tr>
        <th>版本</th>
        <th>说明</th>
       </tr>

      </thead>

      <tbody class="tbody">
       <tr>
        <td>5.3.0</td>
        <td>
         Added the <em><code class="parameter">data</code></em> parameter.
        </td>
       </tr>

      </tbody>
     
    </table>

   </p>
  </div>


 <div class="refsect1 seealso" id="refsect1-splobjectstorage.attach-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="splobjectstorage.detach.html" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::detach()</a> - Removes an object from the storage</span></li>
    <li class="member"><span class="methodname"><a href="splobjectstorage.offsetset.html" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetSet()</a> - Associates data to an object in the storage</span></li>
   </ul>
  </p>
 </div>


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